US3880193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surge absorber for cryogenic fluids
Assignee: Hydril LLC
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Filing: 1974-02-07
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Granted: 1975-04-29
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Expires: 1994-02-07
Abstract
Abstract A surge absorber for cryogenic fluids comprises A. A FIRST CONTAINER FOR CONTAINING PRESSURIZED GAS, AND B. A SECOND CONTAINER TO RECEIVE SURGING CRYOGENIC LIQUID VIA AN INLET TO THE SECOND CONTAINER, THE UPPER INTERIOR OF THE SECOND CONTAINER BEING IN OPEN COMMUNICATION WITH THE INTERIOR OF THE FIRST CONTAINER SO THAT GAS IN THE FIRST CONTAINER IS INCREASINGLY PRESSURIZED AS CRYOGENIC LIQUID IS RECEIVED INTO THE SECOND CONTAINER.
Inventors
- 👤 George E Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:03
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/04; F16L55/045
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
126 words
In a surge absorber for cryogenic fluids, a. a first container for containing pressurized gas, and b. a second container to receive surging cryogenic liquid via an inlet to the second container, said inlet located near the bottom of the second container and there being a cryogenic liqUid inlet pipe passing through the wall of the first container near the bottom thereof to terminate proximate said inlet, the upper interior of the second container being in open communication with the interior of the first container so that gas in the first container is increasingly pressurized as cryogenic liquid is received into the second container, the second container extending into the first container, the two containers having annular upstanding walls which are substantially everywhere closely spaced apart.
Claim 2
Dependent Claim
126 words
In a surge absorber for cryogenic fluids, a. a first container for containing pressurized gas, and b. a second container to receive surging cryogenic liquid via an inlet to the second container, said inlet located near the bottom of the second container and there being a cryogenic liqUid inlet pipe passing through the wall of the first container near the bottom thereof to terminate proximate said inlet, the upper interior of the second container being in open communication with the interior of the first container so that gas in the first container is increasingly pressurized as cryogenic liquid is received into the second container, the second container extending into the first container, the two containers having annular upstanding walls which are substantially everywhere closely spaced apart.
Claim 3
Dependent Claim
24 words
The absorber of claim 1 wherein the containers are vertically elongated and there are insulative spacers located between the walls of the two containers.
Claim 4
Dependent Claim
23 words
The absorber of claim 2 including a baffle within the second container to impede the flow of cryogenic liquid entering the second container.
Claim 5
Dependent Claim
62 words
The absorber of claim 2 including an electric heater proximate the lower extent of the second container for transferring heat to incoming cryogenic liquid to vaporize a portion thereof, thereby to assure the presence of said gas in the first container and within the upper interior of the second container above the surface level of cryogenic liquid received into the second container.
Claim 6
Dependent Claim
35 words
The absorber of claim 4 including a thermostat located to sense the presence of said incoming cryogenic liquid and operatively connected with said electric heater to activate the electric heater in response to said sensing.
Claim 7
Dependent Claim
22 words
The absorber of claim 1 including a main conduit for said liquid and having a side port in communication with said inlet.
Claim 8
Dependent Claim
24 words
The absorber of claim 6 including said liquid in said main conduit and in said second container, and said gas in the first container.
Claim 9
Dependent Claim
23 words
The absorber of claim 7 wherein said gas consists of a hydrocarbon gas, and said liquid consists of said gas in liquified state.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |